<template>
  <div style="height:100%">
      <iframe v-if="$route.query.src"
              :src='$route.query.src'
              class="iframe"
              ref="iframe"></iframe>
      <iframe v-else
              :src="urlPath"
              class="iframe"
              ref="iframe"></iframe>
  </div>
</template>

<script>
  import { mapGetters } from 'vuex'
  import NProgress from 'nprogress' // progress bar
  import 'nprogress/nprogress.css' // progress bar style
  export default {
    name: 'Iframe',
    data () {
      return {
        urlPath: this.getUrlPath() //iframe src 路径
      }
    },
    created () {
      NProgress.configure({ showSpinner: false })
    },
    mounted () {
      this.load()
      this.resize()
    },
    props: ['routerPath'],
    watch: {
      $route: function () {
        this.load()
      },
      routerPath: function () {
        // 监听routerPath变化，改变src路径
        this.urlPath = this.getUrlPath()
      }
    },
    components: {
      ...mapGetters(['screen']),
    },
    methods: {
      // 显示等待框
      show () {
        // NProgress.start()
      },
      // 隐藏等待框
      hide () {
        NProgress.done()
      },
      // 加载浏览器窗口变化自适应
      resize () {
        window.onresize = () => {
          this.iframeInit()
        }
      },
      // 加载组件
      load () {
        this.show()
        var flag = true //URL是否包含问号
        if (this.$route.query.src.indexOf('?') == -1) {
          flag = false
        }
        var list = []
        for (var key in this.$route.query) {
          if (key != 'src' && key != 'name') {
            list.push(`${key}= this.$route.query[key]`)
          }
        }
        list = list.join('&').toString()
        if (flag) {
          this.$route.query.src = `${this.$route.query.src}${
            list.length > 0 ? `&list` : ''
          }`
        } else {
          this.$route.query.src = `${this.$route.query.src}${
            list.length > 0 ? `?list` : ''
          }`
        }
        //超时5s自动隐藏等待框，加强用户体验
        let time = 5
        const timeFunc = setInterval(() => {
          time--
          if (time == 0) {
            this.hide()
            clearInterval(timeFunc)
          }
        }, 1000)
        this.iframeInit()
      },
      //iframe窗口初始化
      iframeInit () {
        const iframe = this.$refs.iframe
        const clientHeight = document.documentElement.clientHeight - (screen > 1 ? 200 : 130);
        iframe.style.height = `${clientHeight}px`
        if (iframe.attachEvent) {
          iframe.attachEvent('onload', () => {
            this.hide()
          })
        } else {
          iframe.onload = () => {
            this.hide()
          }
        }
      },
      getUrlPath: function () {
        //获取 iframe src 路径
        let url = window.location.href
        url = url.replace('http://localhost:8080/#/iframe/', '')
        return "http://" + url
      }
    }
  }
</script>

<style lang="scss">
  .iframe {
    width: 100%;
    height: 100%;
    border: 0;
    overflow: hidden;
    box-sizing: border-box;
  }
</style>
